William George Weichel (July 20, 1870 – May 2, 1949) was a merchant and political figure in Ontario, Canada. He represented Waterloo North in the House of Commons of Canada from 1911 to 1917 as a Conservative member and in the Legislative Assembly of Ontario from 1923 to 1929.^[1]

He was born in Elmira, Ontario,^[1] the son of Michael Weichel, who came to Canada from Hesse,^[2] Germany,^[3] and Margaret Schmidt.^[4] Weichel was educated in Elmira and Berlin (later Kitchener).^[3] He worked eight years as a clerk in his father's hardware store before becoming a salesman for a saw manufacturer in Galt. In 1896, Weichel opened a hardware store with other members of his family in Waterloo, later becoming sole owner. Weichel was also director for several insurance companies.^[5] In 1898, he married Jessie Rose Kinsman.^[3] He defeated William Lyon Mackenzie King to win a seat in the federal parliament in 1911. Weichel was defeated in a bid for reelection to the federal seat as a Unionist candidate in 1917. Weichel served as mayor of Waterloo from 1922 to 1923. He was unsuccessful in the provincial elections of 1929 and 1934.^[1] He died in Kitchener at the age of 78.^[4]